package main.java.com.waylau.netty.demo.time;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

public class TimeClient {

	public static void main(String[] args) throws Exception {
		
		String host = "localhost";// args[0];
        int port = 8080;//Integer.parseInt(args[1]);
        EventLoopGroup workerGroup = new NioEventLoopGroup();

        try {
            Bootstrap b = new Bootstrap(); // (1)
            b.group(workerGroup); // (2)
            b.channel(NioSocketChannel.class); // (3)
            b.option(ChannelOption.SO_KEEPALIVE, true); // (4)
            b.handler(new ChannelInitializer<SocketChannel>() {//被用来处理一个最近的已经接收的 Channel
                @Override
                public void initChannel(SocketChannel ch) throws Exception {
                    System.out.println("Cliet: "+System.currentTimeMillis());
                    ch.pipeline().addLast(new TimeClientHandler());
                }
            });

            // 启动客户端
            System.out.println("开始连接");
            ChannelFuture f = b.connect(host, port).sync(); // (5) 启动后会执行初始化 && Handler

            // 等待连接关闭(服务端会去关闭这个连接)
            f.channel().closeFuture().sync();// 这个方法是异步的 ，所以 程序并没有结束
        } finally {
            // 连接关闭后 程序执行结束
            workerGroup.shutdownGracefully();
        }
	}
}
